Signaling system.



12W/'ISS VALE, PEINSYL'VANIA, .A GORYORA SIGNALIN G SYSTEM.

pplicstion filed Eebruaiy 13, i903.

T0 all whom if may; concern Be .it known that ll, JACOB B. S'rniyeiln. a Icitizen of the United. States, residing at lvilkinsburg, in the county Allegheny and State of Pennsylvania, have invented certa-in new and iiseiil improvements in Signaling S seins. ei which the feliewiiig is u specification.

My invention reintes te ii signaling system for electric reilwzij,;. My invention would apply to the .gnuling et any milwey where the track circuits thereof muy be affected by foreign ein-rents.

A fundamental feature 0f in v invention resides in means hereinafter designated liis ri' translating device, wliieii is operated from a. signaling current in :i tinck eireiiit to eentrol one nperritien et' i riiiliviiy signal. :ind which when the alternating current frein the track circuit slinrt-eireiiited controls another operation of the railway signal. and which vill not respond to zi direct eiii'reiit flowing in the triiek te control :i signal.

Tlieiti'iinslsting device comprises :i ii0nmagnetic movable element er ineiiiliei' :ind means or devices which are niiet-ted by the ziiterniitiiig signaling` current in siieli ninnner ns to produce ii ni0ienie,'it of the sziid element or ineinlz-er by :i shifting1 magnetic field.

ln order 't0 establish fi shifting niiignetie. field. it is only necessary that the fields of. which the resulting; shifting magnetic field is mzide up. lie magnetically displiieeffi with reference to eeli other but within eiieh Others inllueiiee. und iiilfit. these fields he inutiiiilly eut et phase. qince n magnetic field is in phase with the current which produces itpin miler te establish iiiiigneizie fields of dillerent phase iehitinn. it is only nei'fessiiev to iziilv the phiwerelzitimi 0f the urrents producing tlieiii. liliinifistly. :i shifting ningnetic field muy be produced liv mimi* different :irrziiigenunts of parts :iiid methods. :ind l do not wish te he liiiiiled in the pzirtieiilzir forni shown.

l' will destillw :i tiniisiiit/ing device.' ein` liedi'int: niv invention together with its :iiipliezitions in ii signaling system applied te riiilwzivs, :ind then point (iut the zie-vel eiitures thereiif iii claims.

In the :ieeenipinying drawings. Figure i is sn elevation of e. 'ti'nnsiiiting' device en the shifting field principle' embodying my invention. .Fig 2 is a. vertical and longi- Sgiecieaton of Letters Patent.

Fitented Feb. 9, i915.

Serial No. 143,539.

l tudinal sectional View ef the translating dei'iee taken on the 2 et Fig. 3. Fig. 3 is a vertical :ind transverse sectional View of the translating device taken on the line 3 3 of Fig. fig. l is a4 bottom plan View of the translating device, the hettoiii wall of'tiie easing; being reiiiered. `Fig. 5 :i dizigriinirniii-ie view siiiewiiig the arrange, nient. o? par Fig. (3 is .i diiigiiiinnia ea View of :i railway, (other than one using a. triiel( or iziii retu i for the alterniitin; ciirient propulsion,) relay. :i railway niil and the necessary circuits and seurees of current supply for the circuits and eniliedying in v invention. Fig. 7 ii View similar to Fig, 5 but sliowii'ig fi diiereni; eonditien of the eireuits and perts due to the presence ef :i train. S is diiigiarm niiitic View if a railway employing direct current for prepelline the eers along the railway and :i track or rail return. ai relay, e. railiiiy signal and the necessary eireiiits :ind sources of energy enibodif'ing in v invention. Fig. 9 is :i View similar t0. Fig. S. but showing ft different Condition of the circuits :ind parte due to the presence. of zi. train.

Siiiiilzir letters of reference designate cor-- lzitii'igr de\Y ee in the ferm of a relay A proi'ifled 'with :i inoriilile element er armature. i'i'liieii remite-d. er operated in one direction under the inline-nee if ii shifting feld produced. by fin alternating' Current. A designates ii raising." provided with a reiiievable top er Gerer n. t@ 'which the mechanism is uit; i 'i i easing may be nii any size or shape and (if inv material. l preferziblr eiiipiqr' :i ree-tziiigiilfi shaped easing iiiiidel nietiil having suitiiiiie ."iieiiings in its side irrill .rii fire closed liv Seine trans-- parent .siilisiziiiee` The iep :iwi bettoin well :ire :ilse provided with re.- cesses te reet-ire ii relating disk segment which serres :is :in armature. iz designates :i piiir ei depending i.) ets to which :i laminated. rere- B is seeiireifh -is shown in Figi 4 the 'cere is substantially C shaped. l51 designates zi iuriinziry actuating coil provided on one pole of the core B which is in circuit with seiiree of alterna-ting Current supply. provided on each poie of the cere is a coil Closed upon itself and here shown as consisting of a eend of conducting 2 Messrs metal. One side of each coil nis locaterl in a slot in tbe core so that the magnetic d ue to the current passing throngI the coil B1 is displaced. with reference to the n ig 5 netic field set up by the current .passing through the coils b, and inasmuch es tlie currents in the coils b are Aprotliicefl by iiiduction from the currents in the coil Bl, there will also be. a displacement of phase, and a, shifting magnetic field will result,

D designates a rotating disk segment serving as the movable element or armature, which is preferably of some nonanagnetic but electric conductingv material as for ein ample, aluminum. It is pivotall; mounted. with relation to the poles of the core C so as to be affected by Ithe shifting magnetic field.' The armature D is carried by a num ber of arms al radiating from a shaft Aall which latter is mounted at its ends upon or positely arranged screws which scri-'e as a center about which the armature l) rotates. The rotating effect of gravity iipon arrna- `,tire D is in excess of that upon its counter- Weight cl2 by an amount wliicl when the energizing current produce a movement resulting; .i opening Contact lc. The object of proiiili counter- Weiglit d2 is to reduce tlic amount of altermating current necessary to rotate tile disk to close Contact It. In tlie present i tl'ie'arinature when rotated in one direction under the influence of the sl'iifting niagnetic field closes a local circuit, as for er1-- ninple, a railway signal circuit; and when novell, to

rotated in the reverse or opposite direction under tbe influence of gravity, it will open the local circuit. v

lll 'E1, dcsignate two binding posts se- 40 caved' to the' top a and which src included in a local circuit. `One of the binding posts E, is electricall)vv connected by means ol a flexible ribbon of copper, e to a Contact inert,

el carrieil by a lei-'er e2 which is pi'v'oted at one end to tijef cover al. The other end of thc lever is oiriectefl by a link' elA with an arm e4 carrieilby the shaft. The plate e" is adapted to make acontact with the bini' ing;r post El when thearmatiiie i) rotalieii, in one direction, and to inoi'eaiiny from tnebincling' p ost when rotated in tbe opposite or reverse direction. (See dotted lines Fig. 2 for reverse position of arinatiirey Pref ei'ably the Contact will be made when tlm armature is rotated under the inline-.nce of the shifting magnetic field and the contact broken when a reverse rotation occ-nrs ine to the absence of the shifting magnetic ielil and the action of gravity. Froniig.l 5 it (s0 will be further' observed that the iii-in @4,1 link es, lever e"l and Contact piece together with binding post El, have siieli mnt-nal 'mechanical relations that at the moment Contact la is closed, and the consequent resist-ance to a further increment of disk 'D sufficientJ ntion.'

ig desirable increased 7o with e constant rte-fl noon ii' l), tliougli i iii tance, we sie able to se- "ii Y easing contact presonclingly diminisli- 75 ribove mentioned ariis shifting field resignaling of electric direct current as a motive power as inizstratetl in ligs. 8 and 9. ln so suoli cas by app alternating cin-rent lo tlic lz'acl; circuit roi.t operating the signal system, tlie relay will protect the signals against foreign ,in'luences such as that of tlie direct current of tlie propulsion system. 85 This will be readily understood because direct tztli'irrent is not capable of establishingr a .shifting magnetic lielfl, upon which principle tlio relay operates.

Referring non' to Figs. 6 and 7 wherein l 90 have illustrated diagrammatically a portion of s railroad track, the relay of l to 5, a. railway signal and tbe necessary circuit connections. designates the parallel lines of rails each ois which is clii'ided into insii- 95 lated sections, tlic lino Aof rails in cacli scc tion being electrically connected. G iles-ignates aisoiirce of alternating signaling current supply and y, gl the feed wires leadingr therefrom and wliieb extend along the line loo of rails. ll designates a transformer foi' supplying signaling current to the. track cir cuit, one ibeing provided for each' insulated sectionx or block to step down the current from. the feed Wires. The primary winding of erich transformer is included in multiple cire-nit with tlie feed Wires While the secondary! windings fire in circuit Witli the lince ol rail of eric-li insulated section or block. ln circuit witliilie secondary winding is connected non-in liictive resistance R. for the purpose of preventing an excessive flow of current when section is occupied by a. trein. A15-tbe opposite end of the section, a. relay A'is also in circuit with the opposite M5 lines of rails of each insulated section, it be ing connected, to ll'ie `ls by Wires leading from binding posts E", which binding, posts are in circuit tlie primary coil B1. ln circuit with the primary coil B1 islgo non-infliictive resistance Wbicb` serves to prevent exc ire lion' of current through tbm-elogi'. 'lliisir:notesscntialliowevcr. It will be seen, therefore, that when no train or pair of on an insulated section, the alternating sigmiiingcurrent in the .rack circuit of that .section will flow through the coil B; of the relay of that section and use the armature D to rotate to close a Contact in a circuit inolnding the binding posts E, El, and battery or other source of current T which circuit may include an electro-magnetic controlling device of an automatic railway signal I, which may be any of the well known types. The position of the armature of the relay of the insulated section and the position of the signal device L' of the railway signal controlling that section when no train or pair of wheels is on it is shown in Fig. 6, the signal device i being in the position to display a safety signal.

Fig. 7 illustrates the system and arts illustrated in Fig. 6, but in their con 'tion and positions when a pair of wheels W is on the insulated section of track. The wheels W in this instance forms a short circuit forV the alternating current in the track, so that the relay will not be aifected by the current and the armature will rotate in the reverse or opposite direction and open the local circuit in which the binding posts E, El, are included. lVith the local circuit open, the signal device will occupy a position or display a danger si al.

{eferring now to nigs. 8 and 9, the saine system and parts are illustrated with. the cxception that only one of the lines of rails is insulated. With only one line of rail insulated, the system is applicable to roads using direct current for propulsion of cars and the track as a return for the propulsion current. One of the wires g, gl may be dispensed with and the other terminal of the generator supplying current to the track circuit may be connected to the continuous rail. (lr represents a, direct generator' for supplying motive power and g2 the conductor for its transmission.

'hcrever I herein use the term railway signal." l meanto include a visual signal derice, which by its position relatively t0 its support, by color 0r by other means of displaying information, gives indication of the service condition of the railway or section of railway which it is intended to govern, and a mechanism or apparatus for operating,r the signal device. Vvfherever I herein use tlnh term translating device l mean any dfn/ira or :ip aratus by which electrical current is trans ated o r transfornied into some other .form of energy, preferably mechanical motion. Wherever l herein usc the tri-m sys-tcm," signal system" nr signaling 5.5 .sys-tcm", I mean such al comhiinition or arl rangement 0f devices und circuits together with their connectionsI which vnablrs n rail way signal, to be operated either automatically or manually. In the present invention the railway signal is intended to be con trolled automatically and by the passage of a train over the railway or section ot railwaly which the railway signal governs.

am to be understood as describing and claiming the exclusion of direct current only from the o )eration of the signal.

W'hat I claim as my invention. is:

l. In a signaling system, the combination of a closed track circuit, an alternatin signaling current suppl therefor, la si a and means to control t e operation o the signal, said means responding to the absence or presence of the alternating signaling current and not responding to direct current said means comprising a magnet energize from the track circuit, means associated with the core of the ma et for causing a1- ternatin current to Dro uce a shiftin magnetic tie d, and a moving element o nonmagnetic material located in the shifting magnetic field and movable between the oleic in response to the shifting magnetic eli.

2. The combination with a railway track, insulation in both lines of rails to divide the track into sections, a transformer for each section having its secondary winding connected with the op 'te rails of the section, a. relay device gis] each section comprising a magnet, the coil of which is conn nccted with the opposite rails, means associated with the core of the magnet for causing alternating current in the windin` to produce a shifting magnetic field, an an armature of non-rnagnetic material movable between the poles of the magnet in response to the 'shitting magnetic field, and said relay responding to the presence or absence of the alternating signaling current supplied by its transformer and not to direct current in its control of a signal, a source of alternating current, feeder mains extending therefrom and independent of the track rails and having connected therewith in multiple circuit the primary windings of the transformers, and railway signals controlled by the relays.

In testimony whereof, l have signed my nanic to this specification in the presence of two .subscribing witnesses.

JACOB B. STRUBLE. Witnesses:

(ino. E. tnnsn, W. L. MNDANIEI.. 

